UMTS Band 25, Band 1/4 Rx Diplexer

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The Broadcom ACFM-2021 is a highly miniaturized diplexer device designed to allow a common antenna to be used for simultaneous reception of Band 1 (or Band 4) and Band 25.  The device also enables co-banding between UMTS Band 1 and Band 4.
In addition to maintaining high isolation between Band1 or 4 and Band 25 Rx signals, the ACFM-2021 also provides high rejection of nearby RF interferences to minimize intermodulation products.
Low insertion loss in the Rx pass bands maximizes receiver sensitivity. The excellent power handling capability of FBAR bulk-mode resonators supports the high linearity needed for modern mobile devices.


  • Miniature Package Size
    - Standard 1.4x1.8mm PCB Footprint
    - 0.8mm Max Height
  • High Isolation Between Bands
  • Allows Co-banding Between UMTS Bands 1 and 4
  • RoHS 6 Compliant
  • Halogen Free
  • TBBPA Free


  • Smartphones & Tablet PCs
  • Mobile and Portable Communications Devices Receiving UMTS Band 4 and Band 25 Simultaneourly

Lifecycle Status

Limited Release

Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Limited Release
RoHS6 Compliant Y
Distrib. Inventory No
Package SMT 1.4x1.8